Fault details: the engine of a Caterpillar 320 excavator will be hot at 35 ° C in summer. The water tank and radiator of the excavator have been cleaned, but it is still hot. What's going on?
Analysis on common causes of engine high temperature failure of Caterpillar 320 excavator: engine load, hydraulic leakage, poor fuel injection nozzle, insufficient air intake of the engine itself, water channel fouling and low heat dissipation efficiency may all cause the engine high temperature failure of the excavator Too loose fan belt will cause high temperature It may be that the heat dissipation of the engine is not good, so check whether the heat dissipation and water jacket are smooth As for other equipment for heat dissipation, it has nothing to do with other hydraulic and transmission systems. As for air conditioning, it also hinders the heat dissipation of the radiator Belt tension is also important
Fault inspection and maintenance:
It is recommended to add a small water tank for the excavator engine at high temperature. Find a water tank with an electronic fan on the mini car, install it on the excavator, connect the warm air pipe of the excavator to the small water tank, connect the upper warm air pipe to the upper port of the small water tank, and connect the lower one to the 12V power supply of the battery. Press a switch Check the oil pump fire level and oil pump flow, and check the cylinder gasket to see if there are bubbles in the water tank.
When the engine temperature of the excavator is high, first check whether the louvers are fully open, whether the cooling water is sufficient, and whether the antifreeze of last year is added, which will also reduce the boiling point of the cooling water, thus reducing the cooling effect of the cooling water Increase the engine speed to the maximum, hold the water supply pipe gently with one hand, and if you can feel the rhythmic vibration, it indicates that the water pump works normally If there is no or the sense of rhythm is not strong, it means that the water pump does not work or is unable to work, and the water pump is damaged Check the belt. If the air conditioner is turned on, it will be hot. Turn off the air conditioner immediately and move the condensing plate of the air conditioner to the outside
